Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 364
resentthe magnitude of E. M. F. or current at each instant duringthe rotation of the loop in the two-pole Held. The curve indicates a pulsating cur-rent flowing always inone direction. 325. Multi-Coil Ar-matures.—With an ar-mature wound with asingle coil of wire thecurrent in the externalcircuit is… … Fig. 320.—The Induced E. M. F. of Each Turn is in Series With Every Other Turn. other, wrhen, at the instantvertical coil will be zero, while that in the horizontal coilwill be a maximum. As rotation is continued the currentin the one coil, ABCD, increases as that in the other, abed, de-creases…
Electricity · Magnetism
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